RDF Vocabularies (Meta-Package) - All RDF Vocabularies

Overview

Meta-package that includes all RDF vocabularies for maximum convenience and backward compatibility. This package automatically includes:

Core vocabularies (rdf_vocabularies_core): RDF, RDFS, OWL, FOAF, Dublin Core, SKOS, etc.
Schema.org HTTPS (rdf_vocabularies_schema): Modern Schema.org vocabulary
Schema.org HTTP (rdf_vocabularies_schema_http): Legacy Schema.org vocabulary

⚠️ Size Note: This meta-package downloads ~77MB total as it includes all vocabularies. For size optimization, consider using individual packages instead.

📦 Package Selection Guide

Package	Download Size	Content	Best For
`rdf_vocabularies` (this package)	~77MB	All vocabularies	Full compatibility, convenience
`rdf_vocabularies_core`	~5MB	Core RDF vocabularies	Most applications
`rdf_vocabularies_schema`	~35MB	Schema.org HTTPS	Modern Schema.org apps
`rdf_vocabularies_schema_http`	~36MB	Schema.org HTTP	Legacy compatibility

The library is designed for both RDF newcomers and experts, offering structured ways to work with semantic data while maintaining compilation-time safety.

Part of a whole family of projects

If you are looking for more rdf-related functionality, have a look at our companion projects:

basic graph classes as well as turtle/jsonld/n-triple encoding and decoding: rdf_core
encode and decode rdf/xml format: rdf_xml
generate your own easy-to-use constants for other vocabularies with a build_runner: rdf_vocabulary_to_dart
map Dart Objects ↔️ RDF: rdf_mapper

Getting Started

Installation

Add the package to your project:

# Install the meta-package (includes all vocabularies - ~77MB total download)
dart pub add rdf_vocabularies rdf_core

# Or for size optimization, use individual packages instead:
# dart pub add rdf_vocabularies_core rdf_core  # Only ~5MB

💡 Size Optimization: Consider using rdf_vocabularies_core instead for most use cases to reduce download size from ~77MB to ~5MB.

Usage

For RDF Newcomers: Class-Specific Approach

If you're new to RDF, the class-specific approach guides you to use the correct properties for each type of resource:

import 'package:rdf_core/rdf_core.dart';
import 'package:rdf_vocabularies/foaf.dart';
import 'package:rdf_vocabularies/rdf.dart';
import 'package:rdf_vocabularies/xsd.dart';

void main() {
  final personIri = IriTerm('http://example.org/person/jane_doe');
  
  // Create a graph using class-specific constants
  final graph = RdfGraph.fromTriples([
    // Use FoafPerson class for type-safe property access
    Triple(personIri, Rdf.type, FoafPerson.classIri),
    Triple(personIri, FoafPerson.name, LiteralTerm.string('Jane Doe')),
    Triple(personIri, FoafPerson.givenName, LiteralTerm.string('Jane')),
    Triple(personIri, FoafPerson.familyName, LiteralTerm.string('Doe')),
    Triple(personIri, FoafPerson.age, LiteralTerm.integer(42)),
    Triple(personIri, FoafPerson.mbox, IriTerm('mailto:jane.doe@example.com')),
  ]);
  
  print(RdfCore.withStandardCodecs().encode(graph));

Benefits: IDE autocompletion, compile-time validation, guided vocabulary discovery.

For RDF Experts: Direct Vocabulary Approach

Use vocabulary classes directly for maximum flexibility:

import 'package:rdf_core/rdf_core.dart';
import 'package:rdf_vocabularies/foaf.dart';
import 'package:rdf_vocabularies/rdf.dart';
import 'package:rdf_vocabularies/dc.dart';

void main() {
  final personIri = IriTerm('http://example.org/person/jane_doe');
  
  // Create a graph with direct vocabulary access
  final graph = RdfGraph.fromTriples([
    Triple(personIri, Rdf.type, Foaf.Person),
    Triple(personIri, Foaf.name, LiteralTerm.string('Jane Doe')),
    Triple(personIri, Foaf.age, LiteralTerm.integer(42)),
    Triple(personIri, Dc.creator, LiteralTerm.string('System')),
  ]);
  
  print(RdfCore.withStandardCodecs().encode(graph));
}

Benefits: Maximum flexibility, concise syntax, mix vocabularies freely.

Included Vocabularies

This meta-package includes all available RDF vocabularies:

Core Vocabularies (~5MB)

RDF: Resource Description Framework base vocabulary
RDFS: RDF Schema vocabulary
OWL: Web Ontology Language
FOAF: Friend of a Friend vocabulary
DC/DCTerms: Dublin Core vocabularies
SKOS: Simple Knowledge Organization System
VCard: vCard ontology for contacts
XSD: XML Schema Datatypes
ACL: Web Access Control vocabulary
Contact: Contact information vocabulary
EventOwl: Event vocabulary
GEO: Geospatial vocabulary
LDP: Linked Data Platform vocabulary
Solid: Solid platform vocabulary
VS: Vocabulary Status ontology

Schema.org Vocabularies (~71MB)

Schema.org HTTPS (~35MB): Modern Schema.org vocabulary with HTTPS URIs
Schema.org HTTP (~36MB): Legacy Schema.org vocabulary with HTTP URIs

Performance Characteristics

Zero Runtime Overhead: Nearly all content consists of compile-time constants
Type Safety: Catch vocabulary usage errors at compile time
IDE Integration: Get autocompletion and documentation directly in your editor
Download Size: ~77MB total (includes all vocabularies)

Alternative Packages

For size optimization, consider these individual packages:

# Core vocabularies only (~5MB) - recommended for most apps
dart pub add rdf_vocabularies_core rdf_core

# Add Schema.org HTTPS if needed (+35MB)
dart pub add rdf_vocabularies_schema rdf_core

# Add Schema.org HTTP for legacy compatibility (+36MB)  
dart pub add rdf_vocabularies_schema_http rdf_core

Migration from v0.3.x

The API remains 100% backward compatible. Simply update your dependency and optionally optimize package size:

# Continue using meta-package (but now downloads ~77MB)
dart pub upgrade

# Or optimize size by switching to core package
dart pub remove rdf_vocabularies
dart pub add rdf_vocabularies_core
# No import changes needed!

🤝 Contributing

Contributions, bug reports, and feature requests are welcome!

Fork the repo and submit a PR
See CONTRIBUTING.md for guidelines
Join the discussion in GitHub Issues